<template>
	<view>
		<!-- 使用搜索组件 -->
		<my-search @myclick='gotoSearch'></my-search>
		<!-- <my-search :bgcolor="'pink'" :radius='18'></my-search> -->
		<view class="scroll-view-container">
			<!-- 左侧的滑动区 -->
			<scroll-view class="left-scroll-view" scroll-y="true" :style="{height:wh+'px'}">
				<template v-for="(item,i) in cateList" :key="i">
					<view @click="activeChange(i)" :class="['left-scroll-view-item',i===active ? 'active':'']">
						{{item.cat_name}}
					</view>
				</template>
			</scroll-view>
			<!-- 右侧的滑动区-->
			<scroll-view scroll-y="true" style="height:100vh;" :scroll-top="scorllTop">
				<view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
					<!-- 二级分类标题 -->
					<view class="cate-lv2-title">
						/{{item2.cat_name}}/
					</view>
					<!-- 当前二级分类下三级分类列表 -->
					<view class="cate-lv3-list">
						<!-- 二级分类下动态渲染三级分类的数据 -->
						<view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon.replace('dev','web')"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	export default {
		mixins:[badgeMix],
		data() {
			return {
				wh:0,
				cateList:[],
				active:0,
				//二级分类的列表数据
				cateLevel2:[],
				scorllTop:0
			};
		},
		onLoad() {
			this.getWh()
			this.getCateList()
		},
		methods:{
			gotoSearch(){
				uni.navigateTo({
					url:'/subpkg/search/search'
				})
			},
			gotoGoodsList(item){
				uni.navigateTo({
					url:'/subpkg/goods_list/goods_list?cid='+item.cat_id										
				})
			},
			activeChange(i){
				this.active=i
				
				//重新为二级分类复值
				this.cateLevel2=this.cateList[i].children
				
				this.scorllTop=this.scorllTop=== 0 ? 0.1 : 0
			},
			getCateList(){
				var that=this
				uni.request({
					url:'https://www.uinav.com/api/public/v1/categories',
					method:'GET',
					success({data:res}) {
						that.cateList=res.message
						
						that.cateLevel2=res.message[0].children
					},
					fail() {
						uni.showToast({
							title:'请求失败...',
							icon:'none'
						})
					}
				})
			},
			getWh(){
				var that = this
				uni.getSystemInfo({
					success(res) {
						that.wh=res.windowHeight
					}
				})
			}
		}
	}
</script>

<style lang="scss">
	.scroll-view-container{
		display: flex;
		.left-scroll-view{
			width: 120px;
			.left-scroll-view-item{
				background-color: #f7f7f7;
				line-height: 60px;
				text-align: center;
				font-size: 12px;
				
				&.active{
					background-color: #fff;
					position: relative;
					
					&::before{
						content: ' ';
						display: block;
						width: 3px;
						height: 30px;
						background-color: #C00000;
						position: absolute;
						top: 50%;
						left: 0;
						transform: translateY(-50%);
					}
				}
			}
		}
	}
	.cate-lv2-title{
		font-size: 12px;
		//加粗
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	}
	.cate-lv3-list{
		display: flex;
		flex-wrap: wrap;
		
		.cate-lv3-item{
			width: 33.33%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			margin-bottom: 10px;
			
			image{
				width: 60px;
				height: 60px;
			}
			
			text{
				font-size: 12px
			}
		}
	}
</style>
